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Jacob Willen
NPI1295239119PAC ID5092108068
- Part D claims, 2022
- 20
- Publications
- 2
- Industry payments
- $5,732
- Medical groups
- 2
- State license
- 1
- Practice address
- 120 Harvester Dr, Burr Ridge, IL 60527
- Practice phone
- Call (773) 702-9200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
University of Chicago
Burr Ridge, Illinois
Find Jacob Willen's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Jacob Willen is an orthopedic surgeon in Burr Ridge, Illinois
Jacob Willen practices at University of Chicago in Burr Ridge, Illinois.
Jacob Willen's NPI, 1295239119, was assigned on March 23, 2018. Jacob Willen holds Illinois license 036171584.
NPI and contact details
- NPI
- 1295239119NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5092108068
- NPI enumeration date
- March 23, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (773) 702-9200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Jacob Willen practices at University of Chicago in Burr Ridge, Illinois
Jacob Willen's primary practice is University of Chicago, at 120 Harvester Dr, Burr Ridge, IL 60527 in Dupage County. The practice phone is (773) 702-9200.
- University of Chicago120 Harvester Dr, Burr Ridge, IL 60527 · Dupage CountyPhone(773) 702-9200
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Jacob Willen is affiliated with 1 site of care and 2 medical groups
Jacob Willen's primary practice is University of Chicago in Burr Ridge, Illinois. The medical group on file is UChicago Medicine Physicians (University of Chicago Physicians Group). Dmand AI also links Jacob Willen to 1 more medical group, named with a free account.
University of ChicagoPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Jacob Willen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Jacob Willen practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University of Chicago | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Jacob Willen is one of 849 orthopedic surgeons in Illinois
Orthopaedic surgery is Jacob Willen's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Jacob Willen is licensed in Illinois.
Specialties and state licenses
- Orthopaedic surgery, IllinoisPrimary
Orthopedic surgeons near Jacob Willen
Counts of orthopedic surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Jacob Willen's patients have a median age of 13
Across all payers, Dmand AI patient panel data puts Jacob Willen's median patient age at 13, with 40% women.
Jacob Willen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 13
Patient panel by sex, all payers
- Women40%
- Men60%
Source: Dmand AI Patient Panel Data
Jacob Willen wrote 20 Medicare Part D claims in 2022
In 2022, Jacob Willen wrote 20 Medicare Part D claims. They cover 1 drug, with $116 in total drug cost. In 2019, CMS named 37 claims across 2 drugs.
Part D claims, 202220
Drugs named by CMS1
Total drug cost$116
Jacob Willen's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2022
- 2019
- 2022
- Claims for drugs CMS names
- 2019: 372022: 2046%
Drugs named by CMS: 1 in 2022, 2 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Jacob Willen takes part in Medicare
Jacob Willen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Jacob Willen has 2 publications on record
Dmand AI links 2 papers to Jacob Willen in 2021. Jacob Willen's most frequent co-authors are Keith R. Berend, MD and Adolph V. Lombardi, MD.
Papers2
Jacob Willen's most frequent co-authors
Recent publications by Jacob Willen
See who Jacob Willen researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Jacob Willen works with, so you can find a warm path to the right orthopedic surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Jacob Willen received $5,732 in industry payments from 2020 to 2025
CMS Open Payments shows 34 general payments to Jacob Willen from 6 drug and device companies from 2020 to 2025. Education make up the largest share, 70% of the total. Rock Medical Orthopedics, Inc. paid the most, $4,069.
General payments to Jacob Willen by program year, 2020 to 2025
General payments to Jacob Willen by kind, 2020 to 2025
$5.7Kin total
- Education$4,03670%
- Food and beverage$1,26322%
- Travel and lodging$4328%
Companies that paid Jacob Willen the most, 2020 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Jacob Willen's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Jacob Willen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Jacob Willen's NPI number?
Jacob Willen's NPI number is 1295239119. It was assigned on March 23, 2018, and it is active in the NPI Registry.
What does Jacob Willen specialize in?
Jacob Willen is an orthopedic surgeon in Burr Ridge, Illinois. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Jacob Willen practice?
Jacob Willen practices at 120 Harvester Dr, Burr Ridge, IL 60527. Jacob Willen's primary practice is University of Chicago in Burr Ridge, Illinois. Dmand AI also links Jacob Willen to 1 medical group.
What is Jacob Willen's office phone number?
The practice phone on file for Jacob Willen is (773) 702-9200.
What is Jacob Willen's medical license number?
Jacob Willen holds Illinois license 036171584.
What medical group is Jacob Willen part of?
Jacob Willen is linked to UChicago Medicine Physicians (University of Chicago Physicians Group). Dmand AI links Jacob Willen to 1 more medical group.
Does Jacob Willen accept Medicare?
Yes. CMS lists Jacob Willen as accepting Medicare assignment.
What drugs does Jacob Willen prescribe most?
In 2022 Medicare Part D data, Jacob Willen's most prescribed drugs by claims were Oxycodone-Acetaminophen.
Has Jacob Willen received payments from drug or device companies?
CMS Open Payments shows $5,732 in general payments to Jacob Willen from 6 companies from 2020 to 2025. The largest total came from Rock Medical Orthopedics, Inc.
How long has Jacob Willen been practicing?
Jacob Willen's NPI was assigned in 2018.
Does Jacob Willen do research?
Dmand AI links 2 publications to Jacob Willen.
Who does Jacob Willen publish with?
Jacob Willen's most frequent co-authors are Keith R. Berend, MD (1 shared paper) and Adolph V. Lombardi, MD (1 shared paper).
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